Open AccessEffectiveness of laser‐assisted irrigation and passive ultrasonic irrigation techniques on smear layer removal in middle and apical thirds
Author(s) -
Ayranci L. B.,
Arslan H.,
Akcay M.,
Capar I. D.,
Gok T.,
Saygili G.
Publication year - 2015
Publication title -
scanning
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.359
H-Index - 47
eISSN - 1932-8745
pISSN - 0161-0457
DOI - 10.1002/sca.21247
Subject(s) - smear layer , pulp (tooth) , irrigation , materials science , chemistry , dentistry , nuclear chemistry , scanning electron microscope , composite material , medicine , ecology , biology
Summary The purpose of this study was to investigate the evaluation of laser‐assisted irrigation (LAI) on the removal of the smear layer as compared to passive ultrasonic irrigation (PUI). Forty‐eight single‐rooted, upper‐central incisor teeth were selected and prepared with ProTaper rotary instruments up to size #40 (F4) at the working lengths. Specimens were divided into four groups, as follows: (a) PUI with 5 mL of 2.5% NaOCl for 60 s; (b) PUI with 2.5 mL of 17% EDTA and 2.5 mL of 2.5% NaOCl each for 30 s; (c) LAI with 5 mL of 2.5% NaOCl for 60 s; and (d) LAI with 2.5 mL of 17% EDTA and 2.5 mL of 2.5% NaOCl each for 30 s. In the PUI groups, the ultrasonically activated file was inserted 1 mm short of the working length, but in the LAI groups, the fiber tip was applied into the pulp chamber. LAI in the pulp chamber with the combination of 17% EDTA and 2.5% NaOCl removed more of the smear layer than the other groups (p < 0.018). LAI in the pulp chamber with the combination of 2.5% NaOCl and 17% EDTA better removed the smear layer than LAI applied similarly but without EDTA or PUI with the same NaOCl and EDTA combinations using an ultrasonically activated file inserted 1 mm short of the working length. SCANNING 38:121–127, 2016. © 2015 Wiley Periodicals, Inc.